Fog Service in Space Information Network: Architecture, Use Case, Security and Challenges

As a large heterogeneous information infrastructure, space terrestrial coinformation network provides a reliable and effective services for all types of space-based users, aviation users, marine users and land-based users through satellite networks. However, the precious computing and storage resources of satellite nodes during the service life is not fully exploited, and the enormous potential of the space information network (SIN) needs to be tapped to provide personalized services to end users. In this paper, to improve the utilization of satellite node resources and better meet the real-time requirements of compute-intensive and delay-sensitive users, we propose the SIN fog service. SIN fog service is an extension of fog service paradigm. The visionary concept is to integrate the computing power of satellite network edge nodes, enabling a wide range of benefits, including enhanced computing power, decreased bandwidth, reduced latency and without the need to lay complex and expensive ground networks, which can be widely developed in location navigation, environmental detection, traffic management, anti-terrorism, etc. We present the architecture and a potential use case of the SIN fog service. Then we discuss several related key security and challenges and finally the anti-quantum and efficient mutual-authentication protocol is introduced.